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Commit a4e9e566 authored by Alexey Khoroshilov's avatar Alexey Khoroshilov Committed by Sasha Levin
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USB: whci-hcd: add check for dma mapping error 



[ Upstream commit f9fa1887dcf26bd346665a6ae3d3f53dec54cba1 ]

qset_fill_page_list() do not check for dma mapping errors.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: default avatarAlexey Khoroshilov <khoroshilov@ispras.ru>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarSasha Levin <sasha.levin@oracle.com>
parent 782f17fd

drivers/usb/host/whci/qset.c

+4 −0
Original line number Diff line number Diff line
@@ -377,6 +377,10 @@ static int qset_fill_page_list(struct whc *whc, struct whc_std *std, gfp_t mem_f 
	if (std->pl_virt == NULL)

		return -ENOMEM;

	std->dma_addr = dma_map_single(whc->wusbhc.dev, std->pl_virt, pl_len, DMA_TO_DEVICE);

	if (dma_mapping_error(whc->wusbhc.dev, std->dma_addr)) {

		kfree(std->pl_virt);

		return -EFAULT;

	}



	for (p = 0; p < std->num_pointers; p++) {

		std->pl_virt[p].buf_ptr = cpu_to_le64(dma_addr);